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What is LangChain?
LangChain is a development framework for applications powered by language models. It is intended for developers who need to connect model calls with application logic, tools, and broader workflows.
The framework supports work from experimental prototypes through production and deployment, including agentic and other model-driven application patterns. Its audience is software teams that want a structured way to develop, integrate, and operate language model applications.
Key features of LangChain
Language model application development
LangChain gives developers a framework for organizing language model applications and embedding model capabilities into broader software products and task flows.
Agent construction
The framework supports building agents that organize model calls and tool use around a goal across a sequence of related actions.
Application integration
LangChain is suited to development work that connects language models with existing application logic, external tools, or data workflows.
Production and deployment
The product positioning covers productionizing and deploying language model applications, supporting work that moves beyond a proof of concept toward a running service.